Base | Representation |
---|---|
bin | 1111100001011… |
… | …00000111001001 |
3 | 100002000001110021 |
4 | 13300230013021 |
5 | 231313012410 |
6 | 20530420441 |
7 | 3140500543 |
oct | 760540711 |
9 | 302001407 |
10 | 130204105 |
11 | 675512a9 |
12 | 37731721 |
13 | 20c8a665 |
14 | 13414693 |
15 | b66deda |
hex | 7c2c1c9 |
130204105 has 8 divisors (see below), whose sum is σ = 165435912. Its totient is φ = 98035968.
The previous prime is 130204103. The next prime is 130204111. The reversal of 130204105 is 501402031.
It can be written as a sum of positive squares in 4 ways, for example, as 36869184 + 93334921 = 6072^2 + 9661^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 130204105 - 21 = 130204103 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (130204103) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 765822 + ... + 765991.
It is an arithmetic number, because the mean of its divisors is an integer number (20679489).
Almost surely, 2130204105 is an apocalyptic number.
It is an amenable number.
130204105 is a deficient number, since it is larger than the sum of its proper divisors (35231807).
130204105 is a wasteful number, since it uses less digits than its factorization.
130204105 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1531835.
The product of its (nonzero) digits is 120, while the sum is 16.
The square root of 130204105 is about 11410.7013369030. The cubic root of 130204105 is about 506.8446798219.
Adding to 130204105 its reverse (501402031), we get a palindrome (631606136).
The spelling of 130204105 in words is "one hundred thirty million, two hundred four thousand, one hundred five".
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